“π”型钢梁放顶煤工作面顶板事故的原因及控制

The reason and control of "π" type steel girder caving coal mining face accident

对“π放”工作面顶板事故的原因进行了分析,同时结合自身的实践经验,从顶板事故的分类入手,提出了针对性强,技术性可靠的措施,以达到控制“π放”工作面顶板事故的目的。

This article analyses the reasons of 'π' type steelgirder caving coal mining face and combined with the practice experiences, according to the classification of coalface accident refers technical and realiable measures to reach the target of controling the accident of 'π' type steel girder caving coal mining face.